Silver tailings: Profitable waste? | MINING.com

Mar 27, 2012 ... Failure to extract all the metal from mined materials may present profitable opportunities for those who are able to economically reprocess waste materials. Tailings projects underway. A number of companies are exploring or embarking upon tailings projects. PanTerra Gold (ASX:EVG,OTC Pink:ERGTF),...

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From Tailings to Treasure? Miners Make Money Reprocessing ...

May 7, 2015 ... Now, some mining companies are figuring out ways to turn tailings to profits with novel reprocessing technologies to extract valuable metals from the waste. One example reported in ... DRD Gold, one of the first South African companies to abandon traditional mining to focus on extracting gold from tailings.

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New approaches for extracting and recovering metals from mine ...

May 15, 2017 ... Mine tailings may contain base transition metals, such as iron, copper, nickel and zinc, in relatively high concentrations, and also occasionally precious metals such as gold and silver, in minerals (and native metals) that have been not been separated by froth flotation (e.g. Bryan et al., 2006; Ahmadi et al.,...

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Mining Weekly - Gold tailings retreatment an attractive proposition in ...

Oct 14, 2016 ... The strong performance of the rand gold price, increasingly lower ore grades mined in deeper underground mining operations and higher labour and electricity costs are underscoring the attractiveness of, and accelerating, gold tailings retreatment operations in South Africa, states gold miner Sibanye's...

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Mining Weekly - Contractor finds value in gold mine dumps

May 20, 2016 ... Although tailings retreatment is not new to South Africa, the country's mine dumps, especially those of the gold mining sector, still hold immeasurable value that could increase the profitability of mining projects for clients and contractors, says materials handling and hauling expert Ncamiso Mining. Owing to...

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Tons Of Rock For An Ounce Of Gold - Business Insider

Apr 24, 2013 ... In its earnings announcement this morning, Barrick Gold published some mining statistics for its first quarter. As you can see from the numbers below, some sites are more rich with gold than others. But the bottom line is that it takes tremendous amount of rock to yield just specks of gold. In Q1, it took Barrick...

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About Us Goldplat is a profitable, African gold recovery services ...

Goldplat is a profitable, African gold recovery services company with two market leading operations in South Africa and Ghana. ... African operation, by continuing to build contracts with major producers as well as signing toll processing agreements to enable significant gold production through the processing of tailings.

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Maximize the profitability of your quartz-associated gold mining with ...

Maximize the profitability of your quartz-associated gold mining with LASER sorting technology. Increased cash values per tonne, reduced environmental impact in terms of resource demands (water, energy, process reagents, wear and tear of equipment, replacement parts…) plus a reduced amount of tailings, are just some...

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How much does it really cost to mine an ounce of gold? - The Globe ...

Sep 19, 2014 ... A scan of major gold producers' earnings suggests the cost of mining gold has risen dramatically over the past few years. ... Well, if the miner had that big expenditure this quarter because they're building a new tailings facility, the all-in sustaining costs for that particular quarter could be $1,800 per ounce.

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Tailings - Wikipedia

Research at the Porgera Gold Mine is focusing on developing a method of combining tailings products with coarse waste rock and waste muds to create a product that can be stored on the surface in generic-looking waste dumps or stockpiles. This would allow the current use of rivering disposal to cease. Considerable work...

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Harmony's St Helena surface project - Harmony Gold

Jan 28, 2008 ... Harmony Gold Mining Company Limited (Harmony) is investigating the feasibility of re-mining some of its old tailings dams at its operations in the ... Harmony's successful and profitable tailings project near Xinhaiia, the R41 million Phoenix project, was upgraded to process 500 000 tonnes per month.

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Free State surface operations - Harmony Gold

Description. This currently comprises the Phoenix operation, which is located adjacent to Harmony's current and historical operations in Xinhaiia in the Free State. Project Phoenix involves the retreatment of tailings to extract any residual gold from tailings storage facilities in the Xinhaiia area.

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Las Lagunas Gold Tailings Project - Mining Technology

Las Lagunas Gold Tailings is a retreatment project involving the reprocessing of previously unrecovered gold and silver refractory tailings from the Pueblo Viejo mine. ... The development agreement was signed in April 2004 to reprocess the sulphide tailings stockpiled at the dam through profit sharing with the government.

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The Environmental Disaster That is the Gold Industry | Science ...

Feb 14, 2014 ... The No Dirty Gold campaign is anchored in its “golden rules,” a set of criteria encouraging the metal mining industry to respect human rights and the natural environment. .... Of the Pebble Mine, Septoff at Earthworks said, “There could not be a clearer example of a short-term profit gained at a long-term loss.

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Rare Earth Elements From Old Mine Tailings - ABC News

Jul 24, 2013 ... Rare earth elements were discovered long after the Gold Rush ended, and are essential to the manufacture of a variety of high-tech products and weapons ... coupled with the rising price of gold, made it both possible and profitable for mining companies to extract microscopic gold from already-worked rock.

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heads of agreement to procure gold tailings - Signature Metals

Nov 22, 2013 ... B&C, an Australian registered company, and its related entities have had over 8 years of experience within Ghana in operating and exploring gold mining and related business opportunities. B&C has entered into environmental clean-up agreements with Ghana's. Apragya Stool Council and Nyafoman...

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Digging for gold at the rubbish dump | IOL Business Report

Sep 21, 2016 ... Once its mines are depleted, the company faces huge cleanup costs at so-called tailing dams that contain toxic materials like uranium and sulphuric acid, along with the trace amounts of gold. Removing those minerals at a profit can reduce the environmental liabilities while extending metals production for...

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GoGold Resources Inc.

GoGold Resources Inc. - Experience on the Ground.

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Alaska Gold Mining FAQ - Alaska Mining & Diving Supply

Alaska Gold Mining Facts. ... Many of the roads in the Livengood area are made of old mining tailings. Quite a few larger nuggets have been found at Paradise ... There are quite a few "for profit" suction dredging operations in Alaska, mostly on the Fortymile River with 8" or larger dredges. It basically is summer job stuff,...

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Gold Tailings: Hazards and Opportunities | Investing News Network

Oct 4, 2015 ... Tailings from gold mining operations can pose a threat to the environment and health of nearby communities. ... BacTech Environmental Corporation, which focuses on remediating tailing areas of abandoned mining operations, removing not only toxins, but recovering gold and other base metals for a profit.

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Gold Tailings Accumulated From the Past – Fuda Group (USA ...

Gold Tailings Accumulated From the Past. Fuda Gold UK is also engaged in an exciting cooperative agreement with mine owners to sort and filter their discarded waste tailings. This means less gold goes to waste, and increased profit for investors.

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Monster Unveils Tool to Find Gold in the ATS Tailings | ERE

Sep 3, 2014 ... Years ago, when the technology of the day extracted all the gold it was capable of extracting from the tons of earth dug by miners, the remainder was dumped as tailings. Today, new technology and a historic gold price has made it profitable — immensely so for some operators — to sift through those...

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Minor Gold Rushes, Major Gold Production - Utah Department of ...

Aug 9, 2016 ... After years of inactivity in Mercur, improved technology has periodically allowed gold to be extracted from old mine and mill tailings there when the price of gold has risen high enough to make such processing profitable. Gold Hill on Utah's western border enjoyed a much shorter life as a gold mining town.

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Use of gold mill tailings in making bricks: a feasibility study. - NCBI

Waste Manag Res. 2007 Oct;25(5):475-82. Use of gold mill tailings in making bricks: a feasibility study. Roy S(1), Adhikari GR, Gupta RN. Author information: (1)National Institute of Rock Mechanics, Champion Reefs, Kolar Gold Fields, Karnataka, India. surendraroydhn@yahoo.com. Mill tailings dumps at Kolar Gold Fields,...

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Ropes Gold Mine, Ishpeming Greenstone belt (Marquette ...

Ropes Gold Mine, Ishpeming Greenstone belt (Marquette Greenstone belt), Marquette Co., Michigan, USA : S/2 NW/4 Section 29 T48N R27W A gold mine ... Co. purchased the mine property and, using the newly-developed cyanide leaching process, reclaimed nearly $200,000 in gold from the tailings during 1900 - 1901.

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Johannesburg Journal; There's Gold in Those Sand Piles (So They ...

May 10, 2004 ... In the mid-1980's, a few companies began mining the tailings dumps themselves, converting the sand mountains, scoop by scoop, into a watery slurry, which is piped to ... In an average month, Mr. Xinhai said, the company produces about $4.2 million in gold and clears a profit of about $300,000.

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Retreatment of Residues and Waste Rock - SAIMM

From the commencement of gold mining on the Witwatersrand in 1887 up to 1984, a total of approximately 4,2 billion ... bined to make the retreatment of gold residues a profitable proposition, not the least of which have been: ... Gold plant tailings at present amount to a little over 100 million tons per year and this figure is...

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Cyanide Use in Gold Mining - Earthworks

Feb 20, 2018 ... Because cyanide leaching is very efficient, it allows profitable mining of much lower ore grades. ... Romania, Aural Gold, 2000: A tailings dam ruptured, spilling 3.5 million cubic feet of cyanide-contaminated waste into the Tisza and Danube Rivers, killing fish and poisoning water supplies as far as 250 miles...

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Small Scale Gold Mining Business Plan - 911 Metallurgist

Mar 19, 2017 ... This Business Plan is based on the construction and operation of 1 plant to demonstrate the profitability of the toll treatment plant concept. During this first year of operation the management will be evaluating expansion opportunities in other areas of the country as well as at the current site. PTT intends to...

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Gold blankets.cdr - Britannia Mine Museum

The operation of passing the general mill tailings over blankets for additional gold recovery was started ... and this gold seemed to be too fine to be recovered in the tailings blanket plant when treating the whole of the mill ... costs of blanket plant installation were recovered in addition to a nice little profit while the plant was in...

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Chart: Gold may sparkle but silver offers better profit opportunities

Nov 8, 2016 ... The rebound rally in gold is well established with a move above $1,290. The upside target is near $1,350. It's good to see the gold uptrend continuing but the upside target delivers only 4.65% profit. Rather than trade gold there are more effective and profitable ways to trade this rebound. Gold's companion...

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Resurgence in Johannesburg's Gold Tailings Reclamation - WOMP

A significant percentage of the gold that remained in these tailings deposited up to a century ago was reclaimed. Steadily, one of the city's major distinguishing features began to disappear. But earlier this decade, after 25 years, the tailings reclamation operations began to struggle for profitability. They, too, began to tail off.

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Barrick Gold Corporation - Operations

Premier assets, profitable production. Barrick produced 5.32 million ounces of gold in 2017 from a portfolio that includes some of the world's premier gold assets. Our aspiration is ... Acacia Mining plc is a company listed on the London Stock Exchange that owns gold mines and exploration properties in Africa. Barrick holds a...

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Prospecting for Gold in the United States

Nov 30, 2016 ... However, most placer deposits have been thoroughly reworked at least twice--first by Chinese laborers, who arrived soon after the initial boom periods and recovered gold from the lower grade deposits and tailings left by the first miners, and later by itinerant miners during the 1930's. Geologists and...

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The 27 May 1937 catastrophic flow failure of gold tailings ... - NHESS

May 27, 2015 ... tographic archive of the historic gold tailings flood at Tlalpu- .... Tailing dams. Towns. Streams. A. 500 km. Figure 1. Location of the mining district of El Oro-Tlalpujahua (MDOT) in central Mexico (inset), (a) showing the principal rock types, ore .... samples have values that are potentially profitable, with Au.

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Dalradian - Dalradian Announces Positive Feasibility Study for the ...

Dec 12, 2016 ... Dalradian Announces Positive Feasibility Study for the Curraghinalt Gold Project Demonstrating High Profitability and Strong Returns ... The dry stack tailings from the process will not have not come into contact with cyanide. Creation of several hundred new jobs : during the 18-24 month construction period...

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The Old Ways: The monster gold dredges multi-story machines built ...

Jun 19, 2016 ... The original gold dredges were large, multi-story machines built in the first half of the 1900s. Small suction machines ... The rocks deposited behind the dredge (by the stacker) are called “tailing piles.” The holes in the screen ... They allow profitable mining at relatively low operational costs. Even though the...

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Dredge No 4 - Yukon Info

Eventually the two companies were consolidated into the Yukon Consolidated Gold Company or YCGC. The increase in the price of gold to $35 an ounce revived dredging during the depression; however, the Second World War, increased wages, and the fixed price of gold eventually took their toll on profitability, and all...

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What is the Cost of Mining Gold? - Visual Capitalist

May 21, 2013 ... Sometimes, bacteria is used to digest microscopic traces of gold to free them up for refining. Costs is soaring not only in dollars but “intangible” costs in environmental, regulatory, health, insanity… etc. You have to drive down to Southwest like Arizona and New Mexico to see up close what the tailings look...

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Pan African Resources green light for R1.74bn tailings retreatment ...

Dec 5, 2016 ... Pan African Resources aims to start construction early next year on a R1.74bn tailings retreatment project to extract at least 100000 of gold from ... This would be the company's third tailings treatment operation, adding to the highly profitable project at its Barberton mine near the Swaziland border and...

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